Method and system for controlling pore size of microporous phase inversion membranes
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United States of America Patent
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Jul 14, 2009
Grant Date -
Nov 20, 2003
app pub date -
Apr 21, 2003
filing date -
May 14, 2002
priority date (Note) -
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Abstract
This invention provides for a method to control the pore size or bubble point of porous membranes made by phase inversion in a continuous manufacturing process by blending two or more solutions each capable of producing a porous membrane with different pore size or bubble point than the pore size or bubble point of the desired membrane, and blending these solutions by the method of this invention to produce the desired pore size or bubble point. This invention also provides for a method to monitor membrane pore size in a continuous process and adjust pore size during the continuous manufacturing process.
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